Lock



Mar. 3. 1925.

R. E. TAYLOR LOCK ' Filed Feb. 23, 1921 2 Sheets-Sheet l Mar. 3. 1925. 1,528,515

R. E. TAYLOR LOCK Filed Feb. 23, 1921 2 SheetsSheet 2 A xxx fizwadl E. TgZor ATTWW1 Patented Mar. 3,1925. I UNITED STATES RUSSELL, n rams, or new YORK, N. Y.,

FLUSHHIG, NEW YORK.

ASSIGNOR T0 EDWARD I. CUMMINGS, OI

LOCK.

Application filed February 28, 1921.

To all whom it may concern.

Be it known that I, RUSSELL E. TAYLOR,

a citizen of the United States, residing at New York city'. in the county of New York and State of New York, have invented certain new and useful Improvements in Locks, of which the following is a specification.

This invention has relation to door locks, and has for an object to provide a lock having one or more curved locking bars movable in the arc of a circle with a specific form of keeper designed to receive the same whereby the lock may be rendered burglar proof and secure against any attempt to release or destroy the same.

Another object of the invention is to pro- .vide a means for actuating the lockin members consisting of a toggle system 0 levers having the inherent property of resisting any opening efiort on the locking members when the latter are in locked position.

Another object of the invention is to provide a lock having the above characteristics for insertion in the edge of a door and embodying means for operating the look through the medium of the door mobs and for rendering of the knobs inopperative when desired. to bar the door from the outside.- a

In addition to the foregoing this invention comprehends improvements in the details of construction and arrangement of" parts to be hereinafter described and particularly set forth in the appended claims.

In the accompanying drawing in which similar and corresponding parts are designated by the same characters of reference throughout the several views in which they F1gure 1 is an edgewlse v1ew-1n elevation of a door fragment illustrating the application of my lock thereto and showing one escutcheon late in section.

Figure 2 1s a view in section taken on the line 22 of Figure 1. V

Figure 3 is a view in section of the inset lock.

Figure 4 is a view in section taken on the line 4-4 of Figure 3.

Figure 5 is a view similar to Figure .3 BhOWlDg the parts in unlocked position.

Fi re 6 is a view in elevation of a modified cm of outside lock; and

Fi ure 7 is a view in section taken on the line -7 of Figure 6.

Serial No. 447,150.

With reference to Figures 3, 4'and 5, 10 indicates a casing open at one side.- and closed by the plate 11. Located atone end is a pair of curved locking bars 12, each hav ng at one end an inwardly extending radial arm 13, said arms being in overlapping relatlon and apertured to receivea stud 14 formed with the casing 10 and tapped to receive the screw 15 which holds the cover plate 11 against dislodgment. The opposite or meeting ends of the locking bars are beveled and it will be noted that the curvature of each bar is concentric relative to the center of the stud 14, and said bars are movable from a position entirely within the casing to a. position wherein the bars are extended throi'igh end openings of the casing to almost their entire length, limited by engagement of the arms 12 with the end wall of the casing. The locking bars are operated through the medium of a toggle system comprising a triangular actuating member 16 having a square aperture 17 at one corner and having a link 18 pivoted to each of the other corners, the opposite ends of said links being pivoted, one to each of the inner ends of the locking bars 12. The connection is preferably efl'ected through the medium of lateral lugs 19 on the ends of the links which enter openings in the members 12 and 16. By rotating the actuating member 16 to a locking position as shown in Fig. 3 the ends of the locking bars will be forced out of the casing till the ends come into mutual contact, or by reversing rotation the ends of the bars will be withdrawn into the casing. It will be noted from Fi 3 that in the locked position the center 0 the lug 19 of the top link 18 will be in line with the other lug. of said link and the center of rotation of the actuating member 16. The lower link is similarly situated. Thus, should any effort be ap-- plied to force back the locking bars the strain will be directed longitudinally along the links and since they are in a dead center 7 position it will be impossible to move the end. A keeper of any suitable design as indicated at 21 is provided having an arcuate recess 23 to receive the outer ends of both locking bars. To render the lock self looking I provide a coiled spring 24 which is connected at one end to the outer portion of the actuating member and anchored at its other end to the casing in such a manner as to urge the actuating member to a locked position. In order to hold the lockings bars against movement in such a position I provide a releasing member consisting of a bar 25 slidable in the lock casing and adapted to project through an opening in the end of the casing through which the locking bars project. A coiled spring 26 surrounding the rod bearing against a guide lug 27 urges the bar in an outward position. A depending lug 28 is formed on the bar to enter a notch 29 of the top looking bar 12 when the latter is in'a retracted position. -Thus, when the locking bars are retracted the lug 28 will automatically snap into the notch and hold back bbth bars and retain the toggle system in unlocked position. A nut 29 threaded upon the inner end of the bar 25 serves, by engagement with the lug 27 to limit movement of said bar and to provide for adjustment.

The lock casing is inserted into a recess in the edge of a door and an escutcheon plate applied to each side of the door opposite the lock, the outside plate being indicated at 30 and the inside plate at 31. An inside door knob 32 is provided having a square shank 33 which. passes through the plate 31 and through the square opening 17 of the locking member. The inner face of the plate 31 is recessed and a spur gear 34 is enclosed therein and mounted on the shank 33 for rotation therewith. An outside knob 35 is provided and its square shank 36 passes through the outside plate 30, the lock casing and is seated at its end in a recess of the plate 31, a spur gear 37 being mounted at said end of the shank directly above the gear 34. A lever 38 is located within the recemed face of the plate 31 and is fulcrumed abovethe, gear 37 and carries at its lower "end an idler gear 39 which is in constant mesh with the gear 37 and is intended 'to enter into mesh with the gear 34 or to be withdrawn therefrom at will. A flat spring 40 anchored to the plate 31 and bearing against the lever tends to urge the gear 39 out of mesh with the gear 34. A locking barrel of the cylinder or other type is embodied in the outside plate .30 and includesa rotating shaft'41 which extends through the door and carries posed arms 42 which operatewithin the recess of the plate 31 and are extended to alternately engage the upper end of the lever 38 throw the latter outward against the tension of the spring 40, a stop pin 42 bea pair of lateral op-v meant ing provided to prevent complete rotation of the shaft. A stub shaft 43 is mounted in the plate 31 for rotation and carries at its inner "end arms operating in the recess of the plate to similarly engage the lever 38. A finger piece 44 on the outer end of the shaft 43 permits of manipulation.

In operating, assuming the door to be closed the parts of the lock will be in the position shown in Fig. 3 with the locking bars penetrating the keeper. To open the door from the inside the knob 32 is rotated which will withdraw the locking bars in an obvious manner and position the parts as shown in Fig. 5. thus held retracted. When the door is closed again the outer end of the releasing bar 25 will engage the face of the keeper 21 and will be forced inward thus withdrawing the lug 28 from the notch permiting the looking bars to reenter the keeper under the influence of the spring 24. 'It will be noted that as the normal position of the lever 38 is such as to retain the gears 34 and 39 out of mesh any rotative effort applied to the outer knob 35 will only result in the idle rotation of the gears 37 and 39 with no influence upon the locking mechanism. The door will thus be effectively locked from the outside.

Assuming again that the door is in closed position to'open the look from the outside it will be necessary to insert a key in the lock barrel to effect rotation of the shaft 41. This rotation will engage one of the arms against the lever 38, rocking the same to throw the gear 39 into mesh with the gear The locking bars are.

34. Rotation of the outside knob 35 will the lever 38 outward to position the gears in mesh. The teeth of the gears are rounded to promote meshing engagement without the necessity of hunting, for an interfitting relative position.

The locking mechanism proper may be employed as a rim look as shown in Figures 6 and 7 in which the casing is secured to the face of the door, preferably by means of the-bolts 45 which pass through the casing and .partly through the door, being threaded at their inner ends into an anchoring rod 46 inserted in the medial position of the door; Theactuator 16 is rotated by means of a knob 47 when the key is in the cylinder look so as to aline the tumblers and the sliding release 28 is shifted by means of the projecting finger piece 48. The operation of the lock is otherwise the same,

' the operating mechanism shown in Figures mechanism which is characterized by the 1 and 2, being omitted and the actuator rotated .from the outside of the door by means of a lock barrel 49 having a shaft 50 which carries opposed arms 51 to engage a pin 52 projecting from the actuator.

From the foregoing it will be seen that I have provided a novel form of locking provision of curved locking bars operating 1n a curved path which insures a firm bar against opening of the door and which will successfully resist any attempt to unlock or destroy the mechanism. The 7 large cross sectional areas necessary tocut through in hack sawing makes the unauthorized destruction of the lock by this meansa tedious employment suflicient to discourage an attempt.

While I have illustrated and described my invention with some degree of particularity, I realize that in practice various alterations therein may be made.- I therefore reserve the rightand privilege of changing the form of the details of construction or otherwi e alteringthe arrangement of-the correlated parts without departing; from the. spirit of the invention or the scope of the appended claims.

Having thus described my invention what I claim as new and desire to secure by United States Letters Patent is: i I

1. In a locking mechanism, af air of locking bars, means for supporting t e same to permit movement 'in a curved path, a

rotatable actuator, and a pair of links each connected. at" one end to theactuator and having their opposite ends con-I nected"to their corresponding locking bars,"

saidpivoted intsbeing, arranged so that when the loc ing bars are in locked'p0si-- tion the first mentioned pivotal points of the links will be al-ignment'with the pivotal points of the. opposite ends of the links and with the center of rotation of the actuator.

to resist unlocking efiort applied directly to actuator, and links of unequal length, conmoved in a curved path, a keeper to receive a notch, resilient means urging the loeking a the ends of the locking bars, an actuator for said locking bars, one of the latter having end beyond the casing for engagement by the keeper, a lug on said bar to enter the" notch and'hold both 'locking'bars in unlocked position, and means for limiting .movement of said bar.

'3. In a locking mechanism, a pair of independently rotatable door knobs, a locking bar, an actuator therefor operableby one of said knobs, and a svstem of shiftable gears for connectingthe knobs together at will to ensure rotation in unison.-

4. In a locking mechanism, a pair of independent door knobs, a locking bar, an actuator therefor operable by one of the knobs, a gear rotatable with each knob, and a means including a movable gear adapted to be thrown into mesh with said first mentioned gears to connect the knobs for rotation inunison.

5. In a locking mechanism, a pair of independent knobs, a locking mechanism actuable by one of the. knobs, a gear carried by each knob, a movable element carrying an idler gearto be-tlirown into mesh with said first mentioned gears, and a key op- 7 erated means for actuating saidmovable le-" ment.

Gt-In. a' lockingymechanism, a pair of escutcheon plates, a knob rotatable in each plate, a gear operated by each knob, a lockmg mechanism 'directly actuable by one knob, said gears. being located-upon one plate, a lever pivoted on said plate, (an idlergear carried by the lever to bethrow'n into mesh with both of said first mentioned gears, resilient means. engagingthe lever to hold the idler out of said position, .a key operated means carried by the other plate,-

and means operated by said key operated V -means to shift the lever.

7. Ina locking mechanismof the class described, a .pair of curvedv locking bars,

means for supporting said bars to permit their m'oyement in a curved path, a rotatable necting the locking bars with said actuator whereby as the latter is rotated, the locking bars are moved to their operative and inoperative positions. p p In testimony whereof I aifix my signature.

RUSSELL n'TAYLoR. [1,. 5.] 

